Process of and apparatus for making paper hollow ware.



w. H. 'ruLcHEm PROCESS 0F AND APPARATUSFOR MAKING PAPER HOLLOW WARE. APPLICATION FILED IAN.. 3. I9I6.

1,280,008. Pandsepn 24,1918.

2 SHEETS-SHEET I.

lnnor, Wiliam HMC/lex:

By vdorney W. H. FULCHER.

PROCESS 0F AND APPARATUS FOR MAKING PAPER HOLLOWl WARE.l APPLl'cATloN F|`LD`1AN.3.|9|5. y

1,280,008, Patentedsept. 24,1918'.

2 SHEETS-SHEET 2.

, Invenfor,

Will lun Il. Fulc/r,

Ber fw 4f/My,-

forngy UNITED sTATEs PATENT oEEIcE.

WILLIAM H. PULCI-IER, OF OAKLAND, CALIFORNIA, ASSIGNOR TO IiULCHElB.` PULP BOTTLE COMPANY, OF OAKLAND,

CHALIFOItNIA, A CORPORATION OF CALIFORNIA.

PROCESS AND APPARATUS FOR MAKING PAPER HOLIQOW WARE.

To all inkom t mayconcer'n.:

Beit known that I, WILLIAM H. P Uncrmn, a citizen of the United States, residing at vOakland, in the county of Alameda and to the forni of the inside of the bottle to be made, open at the bottom and having 'an apertured top 2. Said top 2 is formed with a central inwardly extending apertured boss 3, and in said boss 3 is screwed one end of a solid shaft 5, around which is a sleeve 6, having at its lower end four pairs of outwardly extending parallel arms 7, having at their outer ends holes 8 9. 11 indicates levers yformed with bearings 12 each adaptedio be received within a pair of the arms 7 and to receive the pivot pins 9 passed through said" arms, whereby said levers are pivoted upon the arms. `Plates 13 form part of the levers `11 at their lower ends and have therethrou h vertically extending holes 14 which enab e them to he bolted to compressor sections 16. At its upper end each lever is formed with a bearing 17 to receive the central portion 18 of a pivot pin. 19. The terminal portions of 4said pivot pins extend eccentrically from 'the central portion thereof, so that the position of said ter4 minal yportions with reference to the lever 11 can beadjusted slightly in said bearing 17 by turning said central portion 18 in sai bearing, since Said bearing 17 is slit lungiw tudinally and has extensions 21, by which the bearings 17 can be clamped about the central portion 18 by means of a screw 22 screwed through one extension 21, its lineari bearing against the other extension. The tern'linal portions of each pivot pin 19 are connected to ends of links specmcation of Letters Patent. Application led January 3, 1916. Serial No. 69,839.

Referring to the drawing, 1 indicates a` hollow metal core, finished on the outside to receive pivot pins 23, the other ende A of which are pivotally connected in pairs to the free ends of n the sleeve 6 and by thus moving upward the inner ends of the said links,

of said levers, are drawn links 23, the outer ends of inwardly, thus Patented Sept. 24, 11918. i

arms 241, extending radiallyy from a sleeve 26 around the sleeve 6, and

and therefore also the upper ends,

causing the lower portions of said levers and the compressor thereto to swing outwardly.

Each compressor section is formed with a plurality, here shown as three, of vertical ribs 28, integrally connected by horizontal mediate ribs 29. and upper and lower terminal plates 31, 32, the ends of which plates extend beyondthe outer upper plate 3l having holes therethrough to enable it to be boltedto the corresponding lever 11, as hereinbefore described. The

`inner edges of the vertical ribs 28 are formed near their respective ends with recesses 33, 34, the upper recessesregistering with the upper closed end of the core l, which projects slightly beyond its side. To the inner 'edges-o? the vertical and horizontal ribs of each compressor section is secured a screen section 36, preferably of woven wire, which screen section at its upper and lower portions has grooves 37, 38 corresponding with the recesses 33, 34, the groove 37 serving, with the closed end of the core, lwhich projects slightly beyond the core, to form at the upper'end of the paper` bottle a'circular groove in its innensurface, to enable `the bottom of the bottle to be readily secured thereto. The lower groove 38 in the wire screen section is for the purpose of forming a bead around the neck' of the bottle near its mouth for the purpose of capping Ithe ternal cap.

The apparatus is used in the following manner :-'.l`l1e sleeve 26 is first raised on the sleeve 6, thus swinging outwardly the com- ,iiiressor sections. Retainin position the Whole of t lowered into a vessel containing paper pulp. The sleeve 26 is then loweredto its original position upon the sleeve 6thus causing the crunpressvcir sections to move inwardly to'- same` with an exvertical ribs, i the sections rigidly secured upper i the parte in this y 1e apparatus yis ypressor sections to approach ward the core 1, and compressing between the sections and the core the pulp which is intervening therebetween. During the compression t e water contained in the pulp escapes through the perforations in the screen sections leaving the solid matter be tween the screen and the core. The apparatus is now drawn out ofthe vessel containing the pulp, such of the pulp as has entered the interior of the core, and passed through the holes in the upper closed end thereof, now falling back into the vessel. The sleeve 26 is now raised upon the sleeve 6, thus separating the compressor sections from the core, and leavin-g the pulp in the shape of the bottle, except that, at the junctions between the compressor sections, there are formed on the pulp four longitudinal ridges. The shaft carrying the core is now rotated slightly and the compressor sections are againclosed by thecore. This has the eii'ect of smoothing out said ridges and also l any irregularities in the outer surface of the paper bottle which have been produced in the first compression. The operation of first removing the compressor sections from the pulp, then turning the core with the pulp thereon through a small angle, and then again compressing the compressor sections upon the pulp, is repeated as many times as may be found necessary to produce a smooth exterior surface on the bottle.

While I have for the sake of brevity and clearness of description referred herein only to the making of paper milk bottles, it is to he understood that the terni paper milk bottles as used in the specification and claims is intended to include all kinds of hollow ware for which the invention is found suitable.

I claim 1. The process of making paper hollow ware which consists in pressing paper pulp between a core and compressor sections, sepa rating the compressorsections from the pulp, and again compressing the pulp by compressor sections applied to different parts thereof. Y

2. The rocess of making paper hollow ware whic consists in dipping a core into a vessel containing paper pulp, causinggcomthe core and compress the pul therebetween, raising the core and the sections with the pulp therebetween from the vessel containing the pulp, separating the compressor sections from the pulp, and again compressing the pulp by pressureapplied to different parts thereof.

3. The process of' making paper hollow ware which consists in dipping a core into a vessel containing paper pulp, causing compressor sections to approach the core and compress the pulp therebetween, raising the core and the sections with the pulp therebetween from the vessel containing the pulp, r

separating the compressor sections from the pulp, and again compressing the pulp b means of compressor sections applied to di ferent parts thereof.

4. In a machine for making paper hollow ware, the combination of a core, a shaft for said core, arms extending in a radial direction with reference to said shaft, levers pivoted on said arms, compressor sections secured to said levers, each havin ribs, screen sections secured to the inner e ges of said ribs, a sleeve around the shaft and links pivotally connected to said sleeve and to the levers.

5. In a machine for making paper hollow ware, the combination of a core, a shaft secured to said core, a sleeve on said shaft having at its lower end outwardly extending arms, levers pivoted on said arms, compressor sections secured to said levers, each having ribs, screen sections secured to the inner edges of said ribs, a second sleeve around the first-named sleeve, and links pivotally connected to said second sleeve and to said levers. 90

6. In a machine for making paper hollow 4ware, the combination of a hollow core, open at the bottom, a shaft secured to said core, a sleeve on said shaft having at its lower end outwardly extending arms, levers pivoted on said arms, compressor sections secured to said levers, each having ribs, screen sections secured to the inner edges of said ribs, a second sleeve around the first-named sleeve, and links pivotally connected to said second sleeve and to said levers.

7 In a machine for making paper hollow ware, the combination of a hollow core, open at the bottom, a shaft secured to said core, a sleeve on said shaft having at its lower endv outwardly extending larms, levers pivoted on said arms, com ressor sections secured to said levers, each aving ribs, screen sections secured to the inner edges of said ribs, each lever having at its upper end a bearing, eccentric pivot pins each contained in one of said bearings, means -for clamping said pin in the bearing, a second sleeve ware, the combination of a hollow core, open at the bottom, and having an apertured top formed with a central apertured boss, a. shaft, one end of which is screwed into said boss, a sleeve on said shaft having at its lower end outwardly extending arms, levers pivoted on said arms, compressor sections secured to said levers, each having ribs, screen sections secured to the inner edges of said ribs, each lever having at its upper end a bearing, eccentric pivot pins each contained in one of said hearings, means for clamping said pin` in bearing, a second sleeve 9. In a machine for makin paperV ho low ware, the combination of a ho low core, open at the bottom, and having an apertured top formed with a central inwardly extending apertured boss, a shaft, one end of which is screwed into said boss, a sleeve on said shaft having at its lower end outwardly extending arms, levers pivoted on said arms, comressor sections secured to said levers, each aving vertical and horizontal ribs, screen sections secured to the innered es of said ribs, each compressor section an the corresponding screen section having grooves near their upper and lower ends repsectively, each lever having at its up er end a bearing, eccentric pivot pins eacE contained in one of said bearings, means. for clamping said pin in the bearing, a second sleeve aroundthe first-named sleeve, and links pivotally connected to said second sleeve and to the eccentric portions of said pivot pins. y r

In testimony whereof I have hereunto set my handin the presence of two subscribing witnesses.

WILLIAM H. FULCHER. Witnesses F. M. Wmon'r, D; B. Rlcxunns. 

